Step Drill Bits
2 Blades:

R2*10*10*70 R3*12*10*70

R4*16*12*90 R5*18*12*90

R6*20*12*90 R7*22*16*90

R8*24*16*90 R9*28*16*100

R10*30*16*100 R12*36*20*110

R15*42*20*110 R20*52*20*120

R25*65*32*120 R30*80*32*145

4 Blades:

R15*45*20*120 R20*60*32*135

R25*75*32*145 R30*90*32*155

Name: R Corner Rounding End mills/Concave Milling Cutter

Material: Cemented Carbide Blade

Product Description: The blades are made from Cemented Carbide Blade, comparing to other high-speed steel material, suitable for processing steel parts, castings, copper, aluminum and other materials.

Product Features: is a milling convex R type face special milling cutter.